Non-contact tonometer

Patent 5148807 Issued on September 22, 1992. Estimated Expiration Date:

August 28, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3763696

Method of measuring ocular pulse
Patent #: 3948248
Issued on: 04/06/1976
Inventor: Zuckerman , et al.

Ultrasonic non-linear parameter measuring system
Patent #: 4610255
Issued on: 09/09/1986
Inventor: Shimura , et al.

Noninvasive vibration measurement system and method for measuring amplitude of vibration of tissue in an object being investigated
Patent #: 4819649
Issued on: 04/11/1989
Inventor: Rogers , et al.

Non-contact high frequency tonometer Patent #: 4928697
Issued on: 05/29/1990
Inventor: Hsu

Inventor

Hsu, Hsiung

Assignee

Ohio State University

Application

No. 574213 filed on 08/28/1990

US Classes:

600/402, Eye vibrated600/400Measuring acoustic impedance of eye

Examiners

Primary: Shay, Randy C.

Attorney, Agent or Firm

Emch, Schaffer, Schaub & Porcello Co.

International Class

A61B 003/16

Abstract

A non-contact, non-invasive tonometer utilizing the technique of angle modulation of high frequency sound waves or high frequency light waves to determine the intraocular pressure of an eye. The angle modulation technique can be either frequency modulation or phase modulation.

Other References

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